Application of CAV to the Gas Dynamics

CAV在气体动力学中的应用

• 批准号: 61850033
• 负责人: FUJIMOTO Tetsuo
• 金额: $ 4.8万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850033/
• 关键词: Gas Dynamics; CAV; Vidicon Camera; Flow Visualization; Pictgure Processing; Laser Induced Fluorescence; Free jet; 質量分離; テレビカメラ

CAFV(Computer Aided Flow Fisualization) system for the gas dynamics has been developed and is applied to analize three dimensional structures of the flow field that is visualized using laser induced fluorescence of I_2 seeded in Ar. The field is visualized by many laser sheets and photographed two dimensionally by a high sensitive vidicon camera. These image data are stored up in a personal computer in order to record three dimensional information on the entire flow field.For the purpose of suppressing the noize, an image datum is an avberage of many frame data. From the image data, the visualized pictures at arbitgrary cross sections (CT; Computer Tomography) are reproducted on the monitor by the personal computer.The propriety and effectiveness of this system are verified through the results applied to two flow fields, i.e., the free jet expanding into the vacuum chamber and an interacting flow field between the skimmer and the free jec.

本文介绍了一个用于气体动力学的计算机辅助流动可视化系统CAFV（Computer Aided Flow Fisualization），并应用于分析激光诱导荧光显示的三维流场结构。该领域是可视化的许多激光片和拍摄的二维高灵敏度摄像机。这些图像数据被存储在个人计算机中，以记录整个流场的三维信息。为了抑制噪声，图像数据是多帧数据的平均值。通过对两个流场的计算结果，验证了该系统的正确性和有效性，即：自由射流膨胀到真空室中，并且在撇渣器和自由JEC之间形成相互作用的流场。

项目成果

Ikuo Nakamura: "The Disturbance Effect of a Circular Cylinder on the Diffusion of Matter by a Plume from a Point Source in Grid-generated Turbulance (1st Report, Characteristics of Velocity and Mean Concentration Field)" Transactions of the JSME. 53-487,b

Ikuo Nakamura：“圆柱体对网格生成湍流中点源羽流物质扩散的干扰效应（第一份报告，速度和平均浓度场的特征）”JSME 交易。

Ikuo Nakamura: "Diffusion of Matter by a Non-buoyant Plume in Grid-generated Turbulence" J. Fluid Mech.178. 379-403 (1987)

Ikuo Nakamura：“网格生成的湍流中非浮力羽流的物质扩散”J. Fluid Mech.178。

Ikuo Nakamura: "The Turbulent Shear Flow on a Rotating Cylinder in a Quiescent Fluid (Flow Visualization and the Scale of Lump of Eddies)" 29-252. 1704-1709 (1986)

Ikuo Nakamura：“静态流体中旋转圆柱体上的湍流剪切流（流动可视化和涡流块的尺度）”29-252。

Ikuo Nakamura: Bulletin of JSME. 29-252. 1704-1709 (1986)

中村郁夫：JSME 通报。

Hideomi Fujita: "Falling Water Films on a Vertical Cylinder with a Downward Step" Int. J. of Engineering Science. 24-8. 1405-1418 (1986)

藤田英臣：“向下台阶的垂直圆柱体上落下的水膜” Int。